Abstract
A field study was conducted to investigate the impact of soil amendments on concentrations of two volatile organic compounds, 2-undecanone and 2-tridecanone, in onion bulbs. The soil in five plots was mixed with sewage sludge, five plots were mixed with yard waste compost, five plots were mixed with laying hen manure each at 15 t acre(-1), and five unamended plots that never received soil amendments were used for comparison purposes. Plots (n = 20) were planted with onion, Allium cepa L. var. Super Star-F1 bulbs. Gas chromatographic/mass spetrometric (GC/MS) analyses of mature onion bulbs crude extracts revealed the presence of two major fragment ions that correspond to 2-undecanone and 2-tridecanone. Soil amended with yard waste compost enhanced 2-undecanone and 2-tridecanone production by 31 and 59%, respectively. Soil amended with chicken manure enhanced 2-undecanone and 2-tridecanone production by 28 and 43%, respectively. Concentrations of 2-undecanone and 2-tridecanone were lowest in onion bulbs of plants grown in sewage sludge and unamended soil, respectively. The increased concentrations of 2-undecanone and 2-tridecanone in onion bulbs may provide a protective character against insect and spider mite attack in field grown onions.
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Claims 8
Claim · model-written summary
Mature onion bulbs contained fragment ions corresponding to 2-undecanone and 2-tridecanone.
- Taxon
- onion
Allium cepae0 - Organ / stage
- mature onion bulbse0
- Outcome
- presence of two major fragment ions that correspond to 2-undecanone and 2-tridecanonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gas chromatographic/mass spetrometric (GC/MS) analyses of mature onion bulbs crude extracts revealed the presence of two major fragment ions that correspond to 2-undecanone and 2-tridecanone.”
Claim · model-written summary
Yard waste compost enhanced onion bulb 2-undecanone production by 31%.
- Taxon
- onionAllium cepat0
- Treatment
- yard waste composte0
- Outcome
- 2-undecanonee0
- Direction
- enhancede0
- Value
- 31e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil amended with yard waste compost enhanced 2-undecanone and 2-tridecanone production by 31 and 59%, respectively.”
t0“onion”
Claim · model-written summary
Yard waste compost enhanced onion bulb 2-tridecanone production by 59%.
- Taxon
- onionAllium cepat0
- Treatment
- yard waste composte0
- Outcome
- 2-tridecanonee0
- Direction
- enhancede0
- Value
- 59%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil amended with yard waste compost enhanced 2-undecanone and 2-tridecanone production by 31 and 59%, respectively.”
t0“onion”
Claim · model-written summary
Chicken manure enhanced onion bulb 2-undecanone production by 28%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil amended with chicken manure enhanced 2-undecanone and 2-tridecanone production by 28 and 43%, respectively.”
t0“onion”
Claim · model-written summary
Chicken manure enhanced onion bulb 2-tridecanone production by 43%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil amended with chicken manure enhanced 2-undecanone and 2-tridecanone production by 28 and 43%, respectively.”
t0“onion”
Claim · model-written summary
Onion bulb 2-undecanone concentration was lowest in sewage-sludge soil.
- Taxon
- onionAllium cepae0
- Treatment
- sewage sludgee0
- Outcome
- Concentrations of 2-undecanonee0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of 2-undecanone and 2-tridecanone were lowest in onion bulbs of plants grown in sewage sludge and unamended soil, respectively.”
Claim · model-written summary
Onion bulb 2-tridecanone concentration was lowest in unamended soil.
- Taxon
- onionAllium cepae0
- Treatment
- unamended soile0
- Outcome
- 2-tridecanonee0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of 2-undecanone and 2-tridecanone were lowest in onion bulbs of plants grown in sewage sludge and unamended soil, respectively.”
Claim · model-written summary
Higher onion bulb volatiles may protect against insect and spider mite attack.
- Taxon
- onionAllium cepae0
- Interactor
- insecte0pest
- Second interactor
- spider mitee0pest
- Outcome
- protective character against insect and spider mite attacke0
- Qualifier
- maye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased concentrations of 2-undecanone and 2-tridecanone in onion bulbs may provide a protective character against insect and spider mite attack in field grown onions.”
The same questions in other papers
fertilization · molecular: metabolites · Allium cepa (onion)Positive and negative results
17 papers in the same direction as this paper · 12 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- negative
27 papers more in this group
See all 31 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.